I'm trying to understand the OP's acceptance of the openly flawed basal logic of the paper. The paper depends on the potential occurrence of a "small true vacuum bubble" created per Heisenberg's theory in what is called a "Metastable False Vacuum" - By definition, the insertion of the word "False" immediately destroys the OP's premise that this describes something coming from nothing. This theoretical "metastable false vacuum" is not nothing. It is by definition "Something" which mathematically appears to be "nothing". All that this paper seems to have proven is that theoretically, if there was something that looked like nothing, something could theoretically have come from it. This brings us (unsurprisingly) no closer to any proof that something could come from nothing. Of course, brilliant idiots the world over will jump on this paper, just like they jumped on the concept of a "Metastable False Vacuum" to tout their "proof" that despite the fact that everyone with a grain of common sense understands that nothing comes from nothing, they know that we are wrong.

Interesting idea, however, it contradicts reality. While, in general, inhaling other stuff is not good for your lungs, you should know that the primary inhaled vapor in e-cigarettes is also the primary inhaled vapor in ATHSMA INHALERS. research has been done (back in the 40s) proving not only that large doses of inhaled propylene glycol are not harmful, but that vaporized propylene glycol is an anti-bacterial agent, which is why it was proposed as a fogging solution for hospitals, to reduce the bacterial growth associated with hospital environments. The solution was not practical, in part because the vapor is not invisible (who wants to walk through foggy clouds all day long) , which is also the primary reason it is attractive as a smoking alternative. No argument on nicotine inhalation being less healthy than non-nicotine inhalation, but nicotine does not affect lung tissue, preferring to target the blood system. This is not a lung issue, other than the health benefits of not smoking cigarettes.